Document how to use Matter in Oniro

Description

The Oniro documentation needs to cover how to use Matter in Oniro.

• Discussion on use-cases to be covered between engineering and documentation teams
• Study and reproduce given use-cases and examples from engineering team
• Document how to use Matter in Oniro (e.g. enabling/building, running on target, blueprints)
• Engage with engineering team during review of the documentation to verify
• Merge in documentation repo